‘Southern Cross’ Ironweed is a natural Vernonia cross, found by Brent Horvath of Intrinsic Perennial Gardens. It is taller than ‘Iron Butterfly’ and has somewhat larger green leaves, but the purple flowers are just as showy and plentiful. Vernonia x ‘Southern Cross’ provides great color to late summer and early fall gardens. It also is an important food source for bees and other pollinators, while also being deer resistant. The attractive fine foliage looks similar to Amsonia hubrichtii.